Thread Class: 3a

Thread Direction: Right-hand

Thread Length: 1.313 inches minimum and 1.375 inches maximum

Fastener Length: 1.375 inches nominal

Head Style: Flat countersunk

Head Diameter: .322 inches minimum and 0.385 inches maximum

Internal Drive Style: Torque set

Thread Diameter: 0.190 inches

Thready Qty Per Inch (tpi): 32

Min. Tensile Strength (psi): 160000 pounds per square inch

Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum

Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum

Screw Material: Steel comp e4340 or steel comp 8740 or steel comp 8735 or steel comp 6150 or steel comp 4140 or steel comp 4037

Screw Material Specification: Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec

2nd material response or mil-s-6098 mil spec 3rd material response or

mil-s-8503 mil spec 4th material response or mil-s-5626 mil spec 5th

material response or ams 6300 assn std 6th material response

Screw Surface Treatment: Cadmium and chromate

Screw Surface Treatment Specification: Qq-p-416,type 2,class 3 fed spec all treatment responses

Thread Series Designator: Unf

NAS1102-3-22 Machine Screw